I saw in the pet section the other day a little pot and seends to grow kitty grass in for indoor cats to eat. Is this something that indoor cats need or is it more of a treat? I wonder b/c my cat tries to eat EVERYTHING that he can get ahold of and thought that maybe he's actually needing some sort of nutrient rather than just chewing on random things. I've also heard that chewing grass may make them throw up, so I don't want to get that started either...(BTW, he eats canned food 1 can/day and there is dry food always available that has vegetables in it as well as meat....) Thanks! Have a great day!